倒计时 js

function timeDown(time,dataExecution) {    if(time == -1){        dataExecution();        return;    }    let timeDay = Math.floor(time/60/60/24);    let timeHours = Math.floor((time-timeDay*24*60*60)/60/60);    let timeMunites = Math.floor((time-timeDay*24*60*60-timeHours*60*60)/60);    let timeSeconds = Math.round(time-timeDay*24*60*60-timeHours*60*60-timeMunites*60);    console.log(timeSeconds);    digitSplit(timeDay,$('.J-day-1'),$('.J-day-2'));    digitSplit(timeHours,$('.J-hour-1'),$('.J-hour-2'));    digitSplit(timeMunites,$('.J-minute-1'),$('.J-minute-2'));    digitSplit(timeSeconds,$('.J-second-1'),$('.J-second-2'));    setTimeout(function () {        time--;        timeDown(time,dataExecution);    },1000);    function digitSplit(num,_this1,_this2) {        let singleDigit;        let tenDigit;        if(num > 9){            tenDigit = Math.floor(num/10);            singleDigit = num - tenDigit * 10;        }else{            tenDigit = 0;            singleDigit = num;        }        _this1.text(tenDigit);        _this2.text(singleDigit);    }}

html

<span class="time J-day-1">0</span><span class="time J-day-2">0</span><span class="word">天</span><span class="time J-hour-1">2</span><span class="time J-hour-2">2</span><span class="word">小时</span><span class="time J-minute-1">2</span><span class="time J-minute-2">2</span><span class="word">分钟</span><span class="time J-second-1">2</span><span class="time J-second-2">2</span><span class="word">秒</span>

引用

倒计时:timeDown(100000,function(){    alert('啊啊啊');});